20131234234 has 8 divisors (see below), whose sum is σ = 30899103840. Its totient is φ = 9831532956.

The previous prime is 20131234153. The next prime is 20131234241. The reversal of 20131234234 is 43243213102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 20131234199 and 20131234208.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117041974 + ... + 117042145.

It is an arithmetic number, because the mean of its divisors is an integer number (3862387980).

Almost surely, 2^20131234234 is an apocalyptic number.

20131234234 is a deficient number, since it is larger than the sum of its proper divisors (10767869606).

20131234234 is a wasteful number, since it uses less digits than its factorization.

20131234234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234084164.

The product of its (nonzero) digits is 3456, while the sum is 25.

Adding to 20131234234 its reverse (43243213102), we get a palindrome (63374447336).

The spelling of 20131234234 in words is "twenty billion, one hundred thirty-one million, two hundred thirty-four thousand, two hundred thirty-four".